5b1a84be4c
Be more DRY when referencing examples and excerpts. E.g.,
```jade
+makeExcerpt('quickstart/ts/app/app.component.ts', 'import',
'app/app.component.ts (import)')
```
can now be just
```jade
+makeExcerpt('app/app.component.ts', 'import')
```
Defined new mixin for examples named `makeProjExample` using this new
scheme.
The original `makeExample` has been left untouched.
Applied new mixins to quickstart.
closes #1420
Why the _fragments dir is checked in
Within this repo files generated as a result of shredding the _examples dir ( the contents of the _fragments dir) are checked in so that we can avoid running the
shredder over the entire _examples dir each time someone refreshes the repo ( the shred-full gulp task).
The gulp serve-and-watch shredder is only a ‘partial’ shredder. It only shred’s files in directories changed during
the current session.